ISO 20541 | IDF 197:2008规定了在Griess反应之后（之前是酶还原）通过分子吸收光谱法测定牛奶和奶制品的硝酸盐含量的方法。 该方法特别适用于全部，部分脱脂，脱脂和干燥的牛奶，硬，半硬和软奶酪，加工奶酪，乳清酪，酪蛋白，酪蛋白酸盐，干乳清和乳蛋白浓缩物。 该方法可以在对应于样品溶液中测得的浓度（空白减去）超过0.2mg/l的内容下使用

ISO 20541|IDF 197:2008 specifies a method for the determination of the nitrate content of milk and milk products by molecular-absorption spectrometry after Griess reaction (preceded by enzymatic reduction). The method is, in particular, applicable to whole, partly skimmed, skimmed and dried milk, hard, semi-hard and soft cheeses, processed cheese, whey cheese, caseins, caseinates, dried whey and milk protein concentrates. The method can be used at contents corresponding to a measured concentration in the sample solution (with blank subtracted) of more than 0,2 mg/l.